The Strongest War God - Chapter 1056 - : Be a Dog and Live in Peace!

Su Ran, a music prodigy, woke up transmigrated into a book.

At that point in time, the main story arc in the book had already been completed. As a villainess female supporting character, not only did she need to take over the original owner’s pitiful life in poverty, she also gained an instant son right at his rebellious period.

Ten or so more years from then, the son would turn into a twisted, evil villain. He would appear in one of the extra chapters to pick on the male and female lead’s children.

***

Su Ran: Son, you shouldn’t be too outstanding.
Su Han: Why not?
Su Ran: ’cause you will be killed.

Su Ran: Son, would you like to learn music from me and become a zen, little fairy boy who only needs to drink dew.
Su Han: No, I want to go into business so I can support you.

- Description from Novelupdates

When The Cute Kunoichis Spied on Their Teacher's Secret is a light novel written by Kazuma Kamachi and illustrated by Ryuushi Tajima.

The story takes place in a world where Japan never ended their isolationist phase, and agents from foreign powers are always threatening to steal the country's advanced technology. In order to combat this threat there has been a resurgence of ninjas that use Strategic Martial Arts, techniques that combine cutting-edge modern technology with a traditional foundation of martial arts and ninjutsu. The story follows Souha Sugiyado, a 17-year old ninja instructor and former ninja prodigy who was forced to retire from active duty by the wounds he suffered in his last mission. Souha's four students are all kunoichi who have all gained the rank of Elite Ninja, the highest official rank available to ninja. However, one day two Shogunate ninja approach him with the news that his four students have gone rogue and have stolen a portable modular nuclear reactor, and thus they ask for his help in bringing his students to justice.

Shen Yu was sincerely in love. For that person’s sake, Shen Yu ignored his illness-ridden body and plotted to overthrow the tyrant. It was only after Shen Yu died that he learned the truth. He was a character in a book, and the man he loved only viewed him as a stand-in for the protagonist. To pave the way for that couple’s happiness, Shen Yu lost everything.After he was reborn, the sickly Shen Yu was so done with that.As for that man, whoever wanted him could have him.Shen Yu took his half-brother’s place and became the male concubine of the tyrant. The tyrant didn’t like men anyway, and Shen Yu didn’t have much time left. Since he was going to die, he might as well go to the palace to sit around and wait for death.After entering the harem of the tyrant everyone feared, Shen Yu ate and drank without a care in the world.The tyrant, with long black hair on his shoulders and crimson eyes, didn’t hide his hostility. He grabbed Shen Yu by the neck. “You’re not afraid to die?”Shen “Just get it over with” Yu felt a little excited. “Are you going to kill me now?”Tyrant: “? ? ? ? ?”Shen Yu entered the palace expecting to die, but he waited and waited and waited. In the end, the officials petitioned to make him the empress, and the tyrant cured his deadly illness.Shen Yu: “…”Shou: jumps frantically up and down on the gong’s bottom line but never diesGong: all he can do with the shou is lower his bottom line again and again

He holds a god-level sign-in system in his hand, punches the goose factory, and steps on the pig factory. Do you think there is no good game?
First feed you two mouthfuls of tainted milk powder, and then send you the legend of the dragon and the Hearthstone gold cartoon for free.
What? Still not satisfied? League of Kings out-of-print skin, give away!
Satisfied? Tch, this is just the beginning…

- Description from novelbuddy